Statistics and Probability Commons^™

Learning From Data: Plant Breeding Applications Of Machine Learning, Alencar Xavier

Open Access Dissertations

Increasingly, new sources of data are being incorporated into plant breeding pipelines. Enormous amounts of data from field phenomics and genotyping technologies places data mining and analysis into a completely different level that is challenging from practical and theoretical standpoints. Intelligent decision-making relies on our capability of extracting from data useful information that may help us to achieve our goals more efficiently. Many plant breeders, agronomists and geneticists perform analyses without knowing relevant underlying assumptions, strengths or pitfalls of the employed methods. The study endeavors to assess statistical learning properties and plant breeding applications of supervised and unsupervised machine learning …

Methods To Account For Breed Composition In A Bayesian Gwas Method Which Utilizes Haplotype Clusters, Danielle F. Wilson-Wells

Department of Statistics: Dissertations, Theses, and Student Research

In livestock, prediction of an animal’s genetic merit using genomic information is becoming increasingly common. The models used to make these predictions typically assume that we are sampling from a homogeneous population. However, in both commercial and experimental populations the sire and dam of an individual may be a mixture of different breeds. Haplotype models can capture this population structure.

Two models based on breed specific haplotype clusters where developed to account for differences across multiple breeds. The first model utilizes the breed composition of the individual, while the second utilizes the breed composition from the sire and dam. Haplotype …

Retention Of Mothers And Infants In The Prevention Of Mother-To-Child Transmission Of Hiv Programme Is Associated With Individual And Facility-Level Factors In Rwanda., Godfrey B Woelk, Dieudonne Ndatimana, Sally Behan, Martha Mukaminega, Epiphanie Nyirabahizi, Heather J. Hoffman, Placidie Mugwaneza, Muhayimpundu Ribakare, Anouk Amzel, B Ryan Phelps

Epidemiology Faculty Publications

OBJECTIVES: Investigate levels of retention at specified time periods along the prevention of mother-to-child transmission (PMTCT) cascade among mother-infant pairs as well as individual- and facility-level factors associated with retention.

METHODS: A retrospective cohort of HIV-positive pregnant women and their infants attending five health centres from November 2010 to February 2012 in the Option B programme in Rwanda was established. Data were collected from several health registers and patient follow-up files. Additionally, informant interviews were conducted to ascertain health facility characteristics. Generalized estimating equation methods and modelling were utilized to estimate the number of mothers attending each antenatal care visit …

Computational Modeling Of Facial Response For Detecting Differential Traits In Autism Spectrum Disorders, Manar D. Samad

Electrical & Computer Engineering Theses & Dissertations

This dissertation proposes novel computational modeling and computer vision methods for the analysis and discovery of differential traits in subjects with Autism Spectrum Disorders (ASD) using video and three-dimensional (3D) images of face and facial expressions. ASD is a neurodevelopmental disorder that impairs an individual’s nonverbal communication skills. This work studies ASD from the pathophysiology of facial expressions which may manifest atypical responses in the face. State-of-the-art psychophysical studies mostly employ na¨ıve human raters to visually score atypical facial responses of individuals with ASD, which may be subjective, tedious, and error prone. A few quantitative studies use intrusive sensors on …

Mapping Morels: Predicting The Locations Of Morchella Species Through Environmental Factors Using The Gis System, Emily M. Stanevicius

Celebration of Learning

Morel mushrooms, Morechella esculenta and M. deliciosa, are known delicacies across the globe, ranging from exquisite dishes in French cuisine to Eastern palates such as Japanese Matsutake. According to literature, true morels diverged as their own genus about 129 million years, again which has led to the development of more than 177 species and have been part of the human diet since their beginning. However, the elusiveness of morels has contributed to the mushrooms infamy for rarity, and has even been known to sell for more than $40 per pound. This project seeks to aid in the search for morels …

Effect Of Ambient Particulate Matter 2.5 Micrometer (Pm2.5) To Prevalence Of Impaired Lung Function And Asthma In Tangerang And Makassar, Budi Haryanto, Budy Resosoedarmo, Sri Tjahjani Budi Utami, Budi Hartono, Ema Hermawati

Kesmas

Emisi partikel debu 2,5 mikrometer (PM2.5) meningkat dengan bertambahnya jumlah penduduk kota akibat peningkatan angka kendaraan bermotor sebagai transportasi penduduk sehari-hari. Penelitian ini bertujuan untuk mengetahui tingkat gangguan fungsi paru dan asma serta hubungannya dengan kadar ambien PM2.5 pada masyarakat migran di Tangerang dan Makassar dan kondisi sosial ekonomi. Desain potong lintang digunakan dengan melibatkan 4.250 dan 2.900 responden di Tangerang dan Makassar pada bulan April sampai September 2010. Pendekatan cluster sampling diterapkan. Pengukuran ambien PM2.5 di masing-masing kota berdasarkan koordinat 40 lokasi Global Positioning System (GPS). Kadar PM2.5 ditemukan lebih tinggi pada pagi hari dibandingkan siang hari di kedua …

Birth Intervals Among Multiparous Women In Indonesia, Dini Kurniawati, Sabarinah Prasetyo

Kesmas

Angka kematian ibu dan angka kematian bayi di Indonesia masih tinggi. Salah satu faktor yang menyebabkan tingginya risiko kematian pada ibu dan bayi adalah kelahiran terlalu dekat. Penelitian ini bertujuan untuk mempelajari determinan jarak antarkelahiran pada perempuan multipara di Indonesia. Penelitian ini menggunakan data Survei Demografi Kesehatan Indonesia tahun 2012 pada 9.945 perempuan multipara. Analisis data menggunakan uji Mann Whitney, Kruskal Wallis, dan regresi logistik. Median jarak antarkelahiran sebesar 62 bulan dan 22,8% perempuan memiliki jarak antarkelahiran kurang dari tiga tahun. Hasil menunjukkan determinan jarak antarkelahiran pendek meliputi pendidikan ibu, usia terakhir melahirkan, ukuran ideal keluarga, pemakaian kontrasepsi, riwayat kematian …

Child Health Improvement Through Implementation Of Food Safety Model, Arief Safari, Machfud Machfud, Eriyatno Eriyatno, Heny Kuswanti Daryanto

Kesmas

Pemenuhan akan pangan merupakan komponen dasar untuk mewujudkan sumber daya manusia yang berkualitas. Namun, masih terdapat permasalahan dalam mewujudkannya, di antaranya masalah keamanan pangan dengan persentase kasus keracunan makanan masih tinggi. Penelitian ini bertujuan untuk menganalisis situasi pelaksanaan keamanan Pangan Jajanan Anak Sekolah (PJAS) yang ada saat ini dan memilih alternatif model keamanan pangan yang paling efektif dan efisien diterapkan di usaha mikro kecil (UMK) guna meningkatkan keamanan pangan yang dihasilkannya sehingga terjadi peningkatan kesehatan anak. Penelitian dilakukan pada kuartal II tahun 2015 sampai dengan awal kuartal III tahun 2015 melalui survei lapangan dan survei pakar dengan mengambil studi kasus …

Housewives’ Compliance In Reading Food Labels In Gorontalo City, Imran Tumenggung, Lucky Herawati, Sofyawati Talibo

Kesmas

Di Indonesia, masalah label pada kemasan makanan kurang mendapat perhatian konsumen. Penelitian ini bertujuan untuk mempelajari determinan kepatuhan membaca label pada kemasan makanan oleh ibu rumah tangga di Kota Gorontalo. Penelitian dengan metode survei ini dilakukan dari bulan Juni sampai Agustus 2013. Data dikumpulkan secara potong lintang dengan menggunakan angket. Variabel terikat adalah kepatuhan membaca label pada kemasan makanan yang terdiri dari label informasi nilai gizi, komposisi makanan, masa kedaluwarsa, harga, dan status halal. Variabel bebas adalah usia, tingkat pendidikan, dan keterpaparan dengan media informasi. Besar sampel 262 orang ditentukan secara accidental technique. Analisis data menggunakan uji kai kuadrat. Hasil …

Husband’S Support Towards Unmet Need Of Hiv Positive-Infected Women Of Childbearing Age, Sophia Sophia, Anita Deborah Anwar, Bony Wiem Lestari

Kesmas

Jutaan wanita usia subur (WUS) dengan HIV positif di negara berkembang saat ini tidak menggunakan kontrasepsi untuk menunda atau mengakhiri kehamilan. Pencegahan kehamilan yang tidak diinginkan pada WUS dengan HIV positif sangat penting untuk meningkatkan kualitas hidup ibu dan anak. Tujuan penelitian ini untuk menganalisis faktor-faktor yang berpengaruh terhadap unmet need pada WUS dengan HIV positif. Metode penelitian adalah cross sectional dengan sampel berjumlah 130 WUS dengan HIV positif yang diambil secara consecutive sampling. Penelitian dilakukan pada 24 Maret - 30 Juni 2015 di Klinik Mawar Kota Bandung. Pengumpulan data dilakukan melalui wawancara dengan menggunakan kuesioner, kemudian data dianalisis dengan …

Impact Of Husband’S Participation In Antenatal Care On The Use Of Skilled Birth Attendant, Febri Wicaksono

Kesmas

Pendekatan alternatif diperlukan untuk mengatasi persoalan kesehatan reproduksi, salah satunya dengan meningkatkan partisipasi laki-laki pada kesehatan reproduksi perempuan. Penelitian ini bertujuan untuk menelusuri dampak partisipasi suami dalam pelayanan antenatal pada penggunaan tenaga persalinan terlatih setelah mengontrol karakteristik sosial demografi. Sampel sebanyak 4.000 perempuan berusia 15 – 49 tahun yang memiliki persalinan terakhir pada tahun lalu sebelum survei diambil dari Survei Demografi dan Kesehatan Indonesia tahun 2012. Penelitian menggunakan model regresi logistik biner untuk mengidentifikasi dampak partisipasi suami dalam pelayanan antenatal pada penggunaan tenaga persalinan terlatih setelah mengontrol karakteristik ibu dan sosial demografi. Peluang setelah mengontrol faktor lainnya mengindikasikan perempuan yang …

The Effect Of Structured Counseling Towards Knowledge, Attitude, And Participation Of Modern Contraceptive Among Unmet Need Couples, Herlina Simanjuntak, Bony Wiem Lestari, Anita Debora Anwar

Kesmas

Unmet need Keluarga Berencana (KB) masih tinggi di negara berkembang termasuk di Indonesia. Konseling kontrasepsi terstruktur berpotensi meningkatkan penggunaan kontrasepsi secara efektif, menjaga keberlangsungan penggunaan dan meningkatkan kepuasan klien. Selama ini seling kontrasepsi yang dilakukan belum optimal, sehingga penelitian ini bertujuan untuk menganalisis pengaruh konseling terstruktur terhadap peningkatan pengetahuan, sikap dan partisipasi kontrasepsi modern pada pasangan usia subur (PUS) yang unmet need. Penelitian ini merupakan eksperimen semu dengan rancangan pretest-posttest dengan kelompok kontrol. Penelitian ini dilakukan pada periode Maret – Juni 2015. Pengambilan sampel dilakukan dengan stratified random sampling pada 48 orang untuk kelompok perlakuan (konseling terstruktur) dan 48 orang …

Homeolog Specific Expression Bias, Ronald D. Smith

Biology and Medicine Through Mathematics Conference

No abstract provided.

Failure Of Surface Color Cues Under Natural Changes In Lighting, David H. Foster, Iván Marín-Franch

MODVIS Workshop

Color allows us to effortlessly discriminate and identify surfaces and objects by their reflected light. Although the reflected spectrum changes with the illumination spectrum, cone photoreceptor signals can be transformed to give useful cues for surface color. But what happens when both the spectrum and the geometry of the illumination change, as with lighting from the sun and sky? Is it possible, as a matter of principle, to obtain reliable cues by processing cone signals alone? This question was addressed here by estimating the information provided by cone signals from time-lapse hyperspectral radiance images of five outdoor scenes under natural …

Population Projection And Habitat Preference Modeling Of The Endangered James Spinymussel (Pleurobema Collina), Marisa Draper

Senior Honors Projects, 2010-2019

The James Spinymussel (Pleurobema collina) is an endangered mussel species at the top of Virginia’s conservation list. The James Spinymussel plays a critical role in the environment by filtering and cleaning stream water while providing shelter and food for macroinvertebrates; however, conservation efforts are complicated by the mussels’ burrowing behavior, camouflage, and complex life cycle. The goals of the research conducted were to estimate detection probabilities that could be used to predict species presence and facilitate field work, and to track individually marked mussels to test for habitat preferences. Using existing literature and mark-recapture field data, these goals were accomplished …

The Relationship Between Time Of Day, Mood, And Electroencephalography (Eeg) Asymmetry, Morgan Tantillo

Honors Projects

Previous researchers have had success in finding a correlation between exercise and an increase in positive mood. Researchers have also found a correlation between time of day and mood. The current study will explore the relationship between time of day, mood, and electroencephalography (EEG) asymmetry. The study utilized a convenient sample of ten undergraduate students at Bowling Green State University. Participants had baseline EEG recordings taken, and then participated in moderate exercise, followed by another EEG recording. Participants’ mood was assessed through a self-reported mood questionnaire before the condition as well as immediately after. Due to multiple statistical tests, the …

Identification Of Biomarkers For The Overall Survival Of Ovarian Cancer Patients, Kristi Mai

Graduate Theses and Dissertations

Rapid advance in sequencing technology has led to genome-wide analysis of genetic and epigenetic features simultaneously, making it possible to understand the biological mechanisms underlying cancer initiation and progression. However, how to identify important prognostic features poses a great challenge for both statistical modeling and computing. In this thesis, a network-based approach is applied to the Cancer Genome Atlas (TCGA) ovarian cancer data to identify important genes related to the overall survival of ovarian cancer patients. In the first step, a stepwise correlation-based selector is used to reduce the dimensionality of TCGA data, by filtering out a large number of …

Integrated Analysis Of Mirna/Mrna Expression And Gene Methylation Using Sparse Canonical Correlation Analysis., Dake Yang

Electronic Theses and Dissertations

MicroRNAs (miRNAs) are a large number of small endogenous non-coding RNA molecules (18-25 nucleotides in length) which regulate expression of genes post-transcriptionally. While a variety of algorithms exist for determining the targets of miRNAs, they are generally based on sequence information and frequently produce lists consisting of thousands of genes. Canonical correlation analysis (CCA) is a multivariate statistical method that can be used to find linear relationships between two data sets, and here we apply CCA to find the linear combination of differentially expressed miRNAs and their corresponding target genes having maximal negative correlation. Due to the high dimensionality, sparse …

Spread Trading In Corn Futures Market, Ryan D. Napier

Graduate Theses and Dissertations

The non-linear relationship between old crop – new crop year spreads in corn futures market and stock-to-use (S-U) ratios published by the United States Department of Agriculture is analyzed. Using a non-linear logarithmic smooth transition regression (LSTR) model, we capture asymmetric market behaviors in high and low S-U regimes. Capturing this relationship and understanding the non-linear aspects of the relationship is of interest of grain merchandizers and speculators in the market. A spread trading strategy is simulated for the sample period, January 1985 through April 2015, to determine if the non-linear relationship is a profitable arbitrage opportunity in the market.

Is Metabolism Goal-Directed? Investigating The Validity Of Modeling Biological Systems With Cybernetic Control Via Omic Data, Frank T. Devilbiss

Open Access Dissertations

Cybernetic models are uniquely juxtaposed to other metabolic modeling frameworks in that they describe the time-dependent regulation of cellular reactions in terms of dynamic "metabolic goals." This approach contrasts starkly with purely mechanistic descriptions of metabolic regulation which seek to explain metabolic processes in high resolution — a clearly daunting undertaking. Over a span of three decades, cybernetic models have been used to predict metabolic phenomena ranging from resource consumption in mixed-substrate environments to intracellular reaction fluxes of intricate metabolic networks. While the cybernetic approach has been validated in its utility for the prediction of metabolic phenomena, its central feature, …

Case-Oriented Pathways Analysis In Pancreatic Adenocarcinoma Using Data From A Sleeping Beauty Transposon Mutagenesis Screen, Yen Yi Ho, Timothy K. Starr, Rebecca S. Larue, David A. Largaespada

Faculty Publications

Background: Mutation studies of pancreatic ductal adenocarcinoma (PDA) have revealed complicated heterogeneous genomic landscapes of the disease. These studies cataloged a number of genes mutated at high frequencies, but also report a very large number of genes mutated in lower percentages of tumors. Taking advantage of a well-established forward genetic screening technique, with the Sleeping Beauty (SB) transposon, several studies produced PDA and discovered a number of common insertion sites (CIS) and associated genes that are recurrently mutated at high frequencies. As with human mutation studies, a very large number of genes were found to be altered by transposon insertion …

Conditional Screening For Ultra-High Dimensional Covariates With Survival Outcomes, Hyokyoung Grace Hong, Jian Kang, Yi Li

The University of Michigan Department of Biostatistics Working Paper Series

Identifying important biomarkers that are predictive for cancer patients' prognosis is key in gaining better insights into the biological influences on the disease and has become a critical component of precision medicine. The emergence of large-scale biomedical survival studies, which typically involve excessive number of biomarkers, has brought high demand in designing efficient screening tools for selecting predictive biomarkers. The vast amount of biomarkers defies any existing variable selection methods via regularization. The recently developed variable screening methods, though powerful in many practical setting, fail to incorporate prior information on the importance of each biomarker and are less powerful in …

Data Publication With The Structural Biology Data Grid Supports Live Analysis, Peter A. Meyer, Stephanie Socias, Jason Key, Elizabeth Ransey, Emily C. Tjon, Alejandro Buschiazzo, Ming Lei, Chris Botka, James Withrow, David Neau, Kanagalaghatta Rajashankar, Karen S. Anderson, Richard H. Baxter, Stephen C. Blacklow, Titus J. Boggon, Alexandre M. J. J. Bonvin, Dominika Borek, Tom J. Brett, Amedeo Caflisch, Chung-I Chang, Walter J. Chazin, Kevin D. Corbett, Michael S. Cosgrove, Sean Crosson, Sirano Dhe-Paganon, Enrico Di Cera, Catherine L. Drennan, Michael J. Eck, Brandt F. Eichman, Qing R. Fan, Oleg V. Tsodikov

Pharmaceutical Sciences Faculty Publications

Access to experimental X-ray diffraction image data is fundamental for validation and reproduction of macromolecular models and indispensable for development of structural biology processing methods. Here, we established a diffraction data publication and dissemination system, Structural Biology Data Grid (SBDG; data.sbgrid.org), to preserve primary experimental data sets that support scientific publications. Data sets are accessible to researchers through a community driven data grid, which facilitates global data access. Our analysis of a pilot collection of crystallographic data sets demonstrates that the information archived by SBDG is sufficient to reprocess data to statistics that meet or exceed the quality of the …

Non-Human Primates In Neuroscience Research: The Case Against Its Scientific Necessity, Jarrod Bailey, Katy Taylor

Experimentation Collection

Public opposition to non-human primate (NHP) experiments is significant, yet those who defend them cite minimal harm to NHPs and substantial human benefit. Here we review these claims of benefit, specifically in neuroscience, and show that: a) there is a default assumption of their human relevance and benefit, rather than robust evidence; b) their human relevance and essential contribution and necessity are wholly overstated; c) the contribution and capacity of non-animal investigative methods are greatly understated; and d) confounding issues, such as species differences and the effects of stress and anaesthesia, are usually overlooked. This is the case in NHP …

Knowledge And Behavior Change Of People Living With Hiv Through Nutrition Education And Counseling, Fitri Hudayani, Ratu Ayu Dewi Sartika

Kesmas

HIV, AIDS, dan gizi saling berhubungan. Pada Unit Pelayanan Terpadu HIV Rumah Sakit Umum Pusat Nasional Dr. Cipto Mangunkusumo, layanan edukasi dan konseling gizi disediakan secara kolaboratif untuk orang yang hidup dengan HIV. Penelitian ini bertujuan untuk mengetahui pengaruh pendidikan dan konseling gizi terhadap pengetahuan dan perilaku orang yang hidup dengan HIV. Penelitian ini dilakukan dengan desain kuasi eksperimental menggunakan kelompok perlakuan dan kontrol. Kelompok perlakuan terdiri dari 25 sampel dan 29 sampel untuk kelompok kontrol, dilakukan sebelum dan setelah perlakuan. Sampel berusia dewasa antara 18 – 50 tahun dipilih dengan menerapkan kriteria inklusi dan eksklusi. Sampel uji-t berpasangan digunakan …

Influence Of Household Environment And Maternal Behaviors To Upper Respiratory Infection Among Toddlers, Reny Fahdiyani, Ardini S. Raksanagara, Hadyana Sukandar

Kesmas

Infeksi saluran pernapasan akut atas (ISPA atas) di negara berkembang menyebabkan morbiditas tinggi pada anak bawah usia lima tahun (balita). Kementerian Kesehatan Republik Indonesia melaporkan bahwa ISPAnonpneumonia meningkat 2,6% dari tahun 2007 ke 2011. Faktor risiko yang dapat berkontribusi termasuk lingkungan dan perilaku. Penelitian ini bertujuan untuk menyelidiki faktor perilaku dan lingkungan dengan ISPA atas pada balita. Studi kasus kontrol ini dilakukan dari Februari-April 2015 pada balita di Tamansari yang merupakan daerah kumuh di Kota Bandung. Kasus adalah 55 ibu dengan balita menderita ISPA atas yang datang ke puskesmas, sedangkan kontrol dua kali lebih besar dari kasus dipilih dari lingkungan …

Predisposing Factors With Complementary Feeding Practices Among 9-11 Month-Old Infants In Jakarta Urban Slum Area, Septriana Septriana, Gita Ardelia Suhartono

Kesmas

Penyebab utama kekurangan gizi selain dari penyakit infeksi adalah pola asuh yang tidak sesuai dan pemberian makan yang optimal menjadi salah satu cara untuk mengatasi konsekuensi jangka panjang dari kekurangan zat gizi. Penelitian ini bertujuan untuk mengetahui hubungan antara faktor pendukung praktik pemberian makanan pendamping air susu ibu (MPASI) pada bayi usia 9 - 11 bulan di daerah kumuh perkotaan Jakarta. Penelitian potong lintang ini melibatkan 50 orang pengasuh bayi usia 9 – 11 bulan. Data dikumpulkan melalui wawancara menggunakan kuesioner. Tidak terdapat hubungan yang bermakna antara usia pengasuh dengan praktik pemberian makan (nilai p = 0,645). Demikian juga dengan …

Residential Density, Parents’ Sexual Activity And Teenage Sexual Behavior In Yogyakarta, Luluk Rosida, Evi Martha, Besral Besral

Kesmas

Pada daerah kumuh dan padat, orangtua sering terpaksa harus berbagi ruang tidur dengan anak-anaknya sehingga anak-anaknya sudah terpapar dengan aktivitas seksual sejak dini. Penelitian ini bertujuan mengetahui kepadatan hunian, aktivitas seksual orangtua, dan efeknya terhadap perilaku seksual remaja di Yogyakarta. Penelitian ini menggunakan desain potong lintang dengan mewawancarai 268 keluarga yang memiliki anak remaja yang dipilih secara acak di daerah kumuh perkotaan dan daerah pedesaan pada bulan Maret – Mei 2015. Analisis data dilakukan menggunakan uji kai kuadrat dan regresi-cox multivariat. Hasil penelitian ini menunjukkan bahwa orangtua yang tinggal di hunian padat memiliki risiko dua kali lebih besar untuk melakukan …

Effects Of Mothers’ Attitude As Breeders And Distance Of Stockyard Toward Diarrhea Incidence Among Toddlers, Yarmaliza Yarmaliza, Sugito Sugito, Teuku Reza Ferasyi, Nurliana Nurliana, Razali Razali

Kesmas

Diare merupakan penyakit dengan perubahan bentuk dan konsentrasi tinja yang melembek sampai mencair, dan bertambahnya frekuensi buang air besar lebih dari biasanya (tiga kali atau lebih dalam sehari). Di Provinsi Aceh, terdapat kasus diare sebanyak 48/1.000 kelahiran hidup pada 2013. Di Kabupaten Aceh Barat, pada tahun 2014 terdapat 1.071 kasus, sedangkan di Kecamatan Meureubo terdapat sebanyak 70 kasus pada anak bawah lima tahun (balita). Penelitian ini bertujuan untuk mengetahui hubungan sikap ibu sebagai peternak dan jarak kandang ternak terhadap kejadian diare pada balita di wilayah kerja Puskesmas Kecamatan Meureubo. Penelitian ini dilakukan secara potong lintang pada bulan Juli – September …

Cadmium Contamination In Farmland Soil And Water Near Zinc Mining Site, Kanitta Jiraungkoorskul, Sara Arphorn, Mathuros Tipayamongholgul, Wattasit Siriwong

Kesmas

Penelitian ini merupakan penelitian potong lintang yang dilakukan di Kecamatan Phatadpaeng, Kota Mae Sod, Provinsi Tak, Thailand. Penelitian ini bertujuan untuk mengetahui konsentrasi kadmium pada air dan tanah pertanian serta pada pemukiman petani dan rumah tangga. Konsentrasi kadmium pada 48 sampel tanah dan air pemukiman petani, 12 sampel rumah tangga, enam sampel tanah pertanian, dan delapan sampel air pertanian ditelusuri menggunakan Graphite Furnace Atomic Absorption Spectrophotometer. Uji Mann-Whitney U digunakan untuk analisis perbedaan konsentrasi kadmium antara tanah pertanian dan tanah pemukiman, air pertanian dan air pemukiman. Hasil penelitian menunjukkan tidak terdapat perbedaan secara statistik pada seluruh matriks, namun air dan …